Publication

Non-isothermal process rheology of thermoplastic composites for compression flow moulding

Jan-Anders Edvin Maansson
2000
Journal Articles

Abstract

The non-isothermal flow rheology of a glass mat reinforced polypropylene composite for compression flow moulding has been investigated experimentally and numerically. The influence of the processing conditions on the macroscopic flow of the material was studied experimentally, while a numerical model relating this macroscopic flow to the local deformation of the matrix at fibre interaction points was developed. By following the local evolution of the shear rate, temperature and viscosity of the matrix polymer, this model provides a better understanding of the moulding process and can be used to evaluate the influence of the material constituents and process conditions on the flow of the composite. It can thus be used to tailor the process and the material for optimum flow behaviour.

Official source

https://infoscience.epfl.ch/entities/publication/a028b7fc-60bd-42bb-b470-253572fad6b9

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Jan-Anders Edvin Maansson
2000
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a028b7fc-60bd-42bb-b470-253572fad6b9

About this result

Related concepts (32)

Composite material

A composite material (also called a composition material or shortened to composite, which is the common name) is a material which is produced from two or more constituent materials. These constituent materials have notably dissimilar chemical or physical properties and are merged to create a material with properties unlike the individual elements. Within the finished structure, the individual elements remain separate and distinct, distinguishing composites from mixtures and solid solutions.

Thermoplastic

A thermoplastic, or thermosoft plastic, is any plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. Most thermoplastics have a high molecular weight. The polymer chains associate by intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid. In this state, thermoplastics may be reshaped and are typically used to produce parts by various polymer processing techniques such as injection molding, compression molding, calendering, and extrusion.

Polymer

A polymer (ˈpɒlᵻmər; Greek poly-, "many" + -mer, "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function.

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Non-isothermal process rheology of thermoplastic composites for compression flow moulding

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Non-isothermal process rheology of thermoplastic composites for compression flow moulding

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Design of debondable composite sandwich structures containing a primer based on thermally expandable microspheres: process window &amp; thermomechanical performance evaluation

Durability of pultruded fibre-polymer composite structures under various environmental conditions over a period up to 25 years

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Design of debondable composite sandwich structures containing a primer based on thermally expandable microspheres: process window & thermomechanical performance evaluation